<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8"/>
    <title>关于我们</title>
    <style type="text/css">
        {
        margin: 0;
        padding: 0;
        }
        .main{
            margin: 0 auto;
            padding: 1100px;
        }

        .box{
            width: 332px;
            height: auto;
            margin: 0 auto;
        }
        .demo{
            width: 64px;
            height: 64px;
            background: #AAAAAA;
            border-top-right-radius: 0;
            display: inline-block;
        }

        p{
            font-size: 14px;
            width: 64px;
            line-height: 64px;
            text-align: center;
        }
        </style>
</head>
<body>
<main>
        <div class="demo">
            <p>固废处理</p>
    </div>
    <div class="demo">
        <p>工业废气</p>
    </div>
    <div class="demo">
        <p>土壤修复</p>
    </div>
</main>
</body>
</html>